That's the kit I was going to get. But the right way to do 2" is with the optional trac bar. Not the drop. The trac bar and pitman arm need to be dropped together the same amount. If you don't change the pitman arm, then don't drop the track bar. Use an adjustable one instead. $300-500.
Then I want to run 37" tires on 18's for a smooth ride. But whoops, they rub on the radius arms and the sway bars. So I need after market radius arms $1000, and to do something about the sway bar. Or just toss the entire sway bar into a lake.
So the added cost of doing a leveling kit really nicely, is the same as a 4" suspension kit.
Sumo springs just on the rear. You can always use plow, F550, etc, springs up front. You can shim the Sumo's so they engage sooner, if needed. Consider also a Helwig rear sway bar maybe.
Gas or Diesel?